PLearn 0.1
ProbSparseMatrix.h
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00001 // -*- C++ -*-
00002 
00003 // PLearn (A C++ Machine Learning Library)
00004 // Copyright (C) 1999-2002 Christian Jauvin
00005 //
00006 
00007 // Redistribution and use in source and binary forms, with or without
00008 // modification, are permitted provided that the following conditions are met:
00009 // 
00010 //  1. Redistributions of source code must retain the above copyright
00011 //     notice, this list of conditions and the following disclaimer.
00012 // 
00013 //  2. Redistributions in binary form must reproduce the above copyright
00014 //     notice, this list of conditions and the following disclaimer in the
00015 //     documentation and/or other materials provided with the distribution.
00016 // 
00017 //  3. The name of the authors may not be used to endorse or promote
00018 //     products derived from this software without specific prior written
00019 //     permission.
00020 // 
00021 // THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
00022 // IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
00023 // OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
00024 // NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
00025 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
00026 // TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
00027 // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
00028 // LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
00029 // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
00030 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00031 // 
00032 // This file is part of the PLearn library. For more information on the PLearn
00033 // library, go to the PLearn Web site at www.plearn.org
00034 
00037 #ifndef ProbSparseMatrix_INC
00038 #define ProbSparseMatrix_INC
00039 
00040 #include "DoubleAccessSparseMatrix.h"
00041 #include "TMat.h"
00042 namespace PLearn {
00043 using namespace std;
00044 
00045 class ProbSparseMatrix : public DoubleAccessSparseMatrix<real>
00046 {
00047 
00048 public:
00049 
00050     ProbSparseMatrix(int n_rows = 0, int n_cols = 0, string name = "pXY", int mode = ROW_WISE, bool double_access = false);
00051 
00052     void incr(int i, int j, real inc = 1.0, bool warning = true);
00053 
00054     void set(int i, int j, real value, bool warning = true);
00055 
00056     bool checkCondProbIntegrity();
00057 
00058     bool checkJointProbIntegrity();
00059 
00060     void normalizeCond(ProbSparseMatrix& nXY, bool clear_nXY = false);
00061 
00062     void normalizeJoint(ProbSparseMatrix& nXY, bool clear_nXY = false);
00063 
00064     void normalizeCond();
00065 
00066     void normalizeJoint();
00067 
00068     string getClassName() const { return "ProbSparseMatrix"; }
00069 
00070     void iterativeProportionalFittingStep( ProbSparseMatrix& p, Vec& lineMarginal, Vec& colMarginal);
00071 
00072     real euclidianDistance( ProbSparseMatrix &p);
00073 
00074     void add( ProbSparseMatrix& p, ProbSparseMatrix& q);
00075 
00076 };
00077 
00078 template <class T> 
00079 inline PStream& operator<<(PStream &out, const ProbSparseMatrix &p)
00080 { 
00081     p.write(out); 
00082     return out;
00083 }
00084 
00085 template <class T> 
00086 inline PStream& operator>>(PStream &in, ProbSparseMatrix &p)
00087 { 
00088     p.read(in); 
00089     return in;
00090 }
00091 
00092 class PSMat : public PP<ProbSparseMatrix>
00093 {
00094 
00095 public:
00096 
00097     PSMat(int n_rows = 0, int n_cols = 0, string name = "pXY", int mode = ROW_WISE, bool double_access = false) : PP<ProbSparseMatrix>(new ProbSparseMatrix(n_rows, n_cols, name, mode, double_access)) {}
00098 
00099     PSMat(ProbSparseMatrix* p) : PP<ProbSparseMatrix>(p) {}
00100 
00101 };
00102 
00103 } // end of namespace PLearn
00104 
00105 #endif
00106 
00107 
00108 /*
00109   Local Variables:
00110   mode:c++
00111   c-basic-offset:4
00112   c-file-style:"stroustrup"
00113   c-file-offsets:((innamespace . 0)(inline-open . 0))
00114   indent-tabs-mode:nil
00115   fill-column:79
00116   End:
00117 */
00118 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :
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